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1,973
RESULTS

Media Type
1,557
texts
211
movies
116
images
71
audio
13
software
5
data
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Availability
1,956
Always Available
17
Available to Borrow
Topics & Subjects
429
carrier
320
NASA Technical Reports Server (NTRS)
163
frequency
146
bell system
142
signal
142
system technical
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Collection
320
NASA Network Resource and Training Site
315
The Magazine Rack
207
The ARCHIVE.ORG Manual Library
165
The Bell System Technical Journal (1922-1983)
159
American Libraries
110
BBC Research and Development Reports
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Creator
320
nasa technical reports server (ntrs)
83
defense technical information center
29
nasa armstrong flight research center
23
u.s. navy. bureau of medicine and surgery
22
joe scherrman
16
nasa
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Language
1,601
English
61
French
4
English with Portuguese subtitles
2
Handwritten English
2
Portuguese
2
Spanish
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